Bradley's knee was twisted in a pile during the scrimmage, Metz said. Bradley limped off the field during the scrimmage, was examined by Burkholder, and then jogged off the field. He was scheduled to have an MRI this morning.

When a reporter called Bradley's cell phone, Eagles head athletic trainer Rick Burkholder answered. Burkholder said all information must come from Eagles coach Andy Reid, who is scheduled to speak to reporters after today's 2:45 workout at Lehigh.

Bradley's absence likely means the Eagles will turn to Omar Gaither or Joe Mays as the starting middle linebacker. Gaither had been the starter on the weak side at the beginning of last season before being replaced by Akeem Jordan. Mays, a 2008 draft pick, appeared in two games last season.

In the Eagles practice this afternoon, Mays is working with the first team in the base defense, but Gaither is likely to be inserted when the Birds go to their nickel package. The Eagles are practicing without pads today.

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In other news, defensive end Jason Babin has agreed to terms on a 1-year deal with the Eagles, according to WMMT-TV in Michigan. (Thanks to the eagle eyes who caught our earlier error in calling him Justin Babin).

Babin, a 2004 first-round draft choice of the Houston Texans who has played with three other NFL franchises, was to fly to Philadelphia and join the Eagles at Lehigh, the report said.